Dry gas seal issues
Thread Content
The centrifugal compressors at our facility are currently under commissioning, and it was suddenly discovered that there was water in many of the pipes. It is likely due to the continuous rain recently, as the direction of the vent lines is not protected from rain. . . . The problem now is that it seems there is water present in the dry gas seal as well. I’m wondering if water getting into the dry gas seal has a significant impact on the seals
If water gets into the dry gas seal, it must be dealt with immediately; otherwise the seal will be damaged! ! !
It needs to be dealt with immediately; otherwise, using it will damage the dry gas seal, as it is sensitive to liquid entering the sealing surface.
Bro, don’t blame me for not warning you – get rid of that water right away; otherwise, the sealing will definitely get damaged when work starts. The dry gas seal pipelines in our facility are all equipped with heating, to prevent the presence of condensate in the medium. As for the mechanism of damage, if you’re interested, send me a message and I’ll send you some information to take a look at. Additionally, I have a forum thread dedicated to discussions on the use of dry gas seals; you are welcome to join the conversation at http://bbs.hcbbs.com/thread-403618-1-1.html
The manufacturer removed it today; there’s some water inside. Everyone in the company is extremely worried. It needs to be sent back to Shanghai for processing, and I guess we’ll have to spend more money to fix this problem
I encountered a similar issue: the seal was exposed to water and operated for over 20 hours; later it was found that nitrogen also contained water. After taking corrective actions, everything returned to normal, and during the maintenance check half a year later, there were no problems with the seal.
Quickly remove the sealing air pipe fitting of the host and block the host interface. Install a rain cover on the vent pipe, along with a drainage guide ； Blow with clean nitrogen, check to confirm there is no water inside the tube, then connect it to the flange connected to the main unit, and repeat the purging process to ensure a good seal.
What is a \"dry gas seal\"?
The sealing surface of a dry gas seal must absolutely not be exposed to water; even oil is not allowed there. The rear isolation gas is provided to prevent the lubricating oil in the bearing housing from leaking into the dry gas seal. If water gets into the dry gas seal, it must be dealt with immediately; otherwise the consequences will be severe.